Baxter International Inc.

Baxter Healthcare Sa

Nexell Therapeutics Inc.

Other

Baxter Aktiengesellschaft

Sam L Helgerson

Heinz Redl

Douglas L Looker

Walter Fuerst

Shane Donovan

Jane P Richards

Rudolf Kneidinger

Joseph F Dwyer

Janet Tseng-Law

Elisabeth M Inman

Joseph Edward Curtis

Wanda Seyton

Catalina Wong

Isabelle Catelas

Robert J Deans

Roy Guillermo

Fahad A Al-Abdaly

Joan A Kobori

Roger L Lundblad

Shu-Len Liu

The present invention relates, in general, to fibrin sealants, which contain platelet derived growth factor (PDGF) for controlled release in situ for therapeutic applications, including musculoskeletal disorders, soft tissue disorders and vascular diseases.

Fibrin gel for controlled release of PDGF and uses thereof

A fibrin/fibrinogen binding conjugate for forming a depot for the sustained release of a pharmaceutically active substance from a fibrin clot. The conjugate comprises a fibrin/fibrinogen binding moiety bound to a pharmaceutically active substance either directly or via an intervening substance capturing moiety such as an antibody. The conjugate can also be a recombinant fusion protein comprising a fibrin/fibrinogen binding moiety such as VEGFC-terminal domain fused to a wound-healing substance such as leptin.

Fibrin/fibrinogen-binding conjugate

A fibrin/fibrinogen binding conjugate for forming a depot for the sustained release of a pharmaceutically active substance from a fibrin clot. The conjugate comprises a fibrin/fibrinogen binding moiety bound to a pharmaceutically active substance either directly or via an intervening substance capturing moiety such as an antibody. The conjugate can also be a recombinant fusion protein comprising a fibrin/fibrinogen binding moiety such as VEGF C-terminal domain fused to a wound-healing substance such as leptin.

The invention provides a nonenzymic method for the release of cells which have been selected from a heterogeneous cell suspension by antibody-mediated binding to beads or other solid support. The method entails forming within the cell suspension a complex comprising the solid support linked to a primary monoclonal antibody, which in turn is bound to a cell surface antigen on the target cells. The complex is separated from the cell suspension, and then contacted with a specific peptide which binds to the primary antibody, displacing the antibody from the cell surface antigen, thereby releasing the target cell from the complex. The invention also provides methods for positive/negative cell selection wherein target cells having a first antigen are selected from a heterogeneous cell suspension containing undesired cells having a second antigen.

Positive and positive/negative cell selection mediated by peptide release

The invention provides a non-enzymatic method for the release of cells which have been positively selected from a heterogeneous cell suspension by antibody-mediated binding to beads or other solid support. The method entails forming within the cell suspension a complex comprising the solid support linked to a primary antibody, which in turn is specifically bound to a cell surface antigen on the target cells. The complex is separated from the cell suspension, and then contacted with a specific peptide which binds to the primary antibody, displacing the antibody from the cell surface antigen, thereby releasing the target cell from the complex. The invention also provides methods for positive/negative cell selection wherein target cells having a first antigen are selected from a heterogeneous cell suspension containing undesired cells having a second antigen. The invention also provides methods for identifying a specific peptide useful for the release of a target cell from the binding of a specific primary antibody. The methods of the invention are particularly useful for the positive selection of CD34+ hematopoietic stem cells and the concomitant purging of undesired tumor cells or lymphocytes from the positively selected cell population. The purified CD34+ cell composition is then useful for reinfusion to a cancer patient after high-dose therapy in order to reconstitute the patient's immune system.

A method for preparing a purified and stable activated human Factor VIII composition is disclosed. A purified and stable activated human Factor VIII composition having a specific activity of at least 100,000 units per mg protein, or a potency of at least 15,000 units per ml is also disclosed.

Activated human factor VIII and method of preparation

Stabilized and activated Factor VIII is used as a therapeutic agent to treat patients with a Factor VIII deficiency. This includes hemophilia A patients as well as patients with Factor VIII inhibitors which block the hemostatic activity of Factor VIII. The stabilized and activated Factor VIII is also prepared in a therapeutic composition with a therapeutically acceptable adjuvant.

Activated factor VIII as a therapeutic agent and method of treating

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Lincolnshire, IL, United States of America

Sam L Helgerson